Perforating device for loose-leaf sheets



Jan. 11, 1938. r J. SCHADE 2,105,233 PERFORATING DEVICE FOR LOOSE LEAF SHEETS Filed May 5, 1937 2 Sheets-Sheet l 20 M In ATTORNEYS Jan. 11, 1938. J. SCHADE 2,105,233

PERFORATING DEVICE FOR LOOSE LEAF SHEETS Filed May 5, 1937 2 Sheets-Sheet 2 7 I INVENTOR ATTORNEYS Patented Jan. 11, 1938 PERFORATING DEVICE FOR LOOSE-LEAF SHE John Schade, Holyoke, Mass,

ETS

assignor to National Blank Book Company, Holyoke, Mass, a corporation of Massachusetts Application May 5, 1937, Serial No. 140,794

5 Claims.

This invention relates to an improved combination for perforating loose leaf sheets and particularly a combination to be carried by the loose leaf binder in. which the perforated sheets are to be mounted.

I am aware that there are many prior art examples of a sheet perforating mechanism car ried by the loose leaf binder. My present invention lies in certain specific arrangements of elements which in their relationship make a new and useful combination of improved character. This relationship and its utility will be pointed out after I disclose the detail of my invention.

' In the drawings, Y

Fig. l. is. a plan View of :a loose leaf binder opened out and indicating the locations of the sheet perforating means;

Fig. 2 is a section on line 22 of Fig. 1 through one of the hole perforating devices but on an enlarged scale;

Fig. 3 is a plan view of part of the flyleaf element without the perforating devices on it, but punched to receive them;

Figs. 4 and 5 are respectively top and bottom views of one leg of the perforating device;

Fig. 6 is a bottom view of the other leg of the device; and

Fig. 7 is a sectional view showing a modified structure.

I have shown a conventional loose leaf ring binder. It is customary in. such binders to provide short sheets of relatively stiff material, one on each side of the paper pack. These are flyleaves and I use one of them as an element in my combination. One type of ,fiyleaf I find it convenient to use is shown in the Schade Patent 2,005,474 of June 18, 1935. It is made of stifi springy material and has an inch ruler marking on its outer straight edge. Binders with these things in them are especially adapted for school childrens use.

According to my invention in its preferred form, I cut sets of openings a, b, and (see Fig.

3) in the material of the flyleaf l, which openings, l9, 6, 8', are designed to receive parts of a fiat metal spring clip 2 of thin steel. This clip is designed to work with the flyleaf material and serve as a paper sheet perforating device. There is one such device for each ring of the book and such devices are spaced on the fiyleaf to correspond with the spacing of the rings.

{The top leg 3 of the clip (see Fig. 2) is bent into a slightly bowed form, with. an enlarged ear or tab 4 at the outer free end. This ear has a round hole in the center. Small flanges 6 are bent down out of the plane of the car at its inner corners and these flanges extend through corresponding slots 6 in the flyleaf. With the slots; the ears act as positioning means for the spring clip to avoid movement of the ear except 5 that directly down against the fly strip.

The bottom. leg l of the clip is also bent into a slightly bowed form at the forward end and bowed in the same direction as the top leg. The opening 7 (see Fig. 6) is cutout of this leg to 10 lighten it. And on the bottom leg 7 there is fastened a small round plug 8 adapted to fit the hole 5 in the top leg, after having passed through hole 8 in the flyleaf, so as to act with hole 5 as a punch for making binding holes in the 16 paper.

The two legs 3 and l of the clip may be joined by an integral fold 9 (see Fig. 2) in the metal or the inner ends of the legs may be each provided with short flanges 9 and 9" (see Fig. '7) 2 which overlap in the slot opening it of the flyleaf. In the latter case a rivet ii! is used to permanently join the legs, such rivet being located to pass through both legs of the clip and the flyleaf adjacent the slot opening, as shown in. Fig. '7.

The action of the single perforator device can be seen from the sectional view, Fig. 2. The paper may be pushed between the ear i and the flyleaf l and will be squared oii by the flanges 5 at the corners of the ears. In this position. of the parts, the top leg due to its bowed form, presents the ear 6 slanting upwardly'from the flat flyleaf surface 1. The latter acts to support the paper margin fiatwise. The bottom leg i being bowed, as shown in Fig. 2, has its outer edge in spring contact with the under side of the hat flyleaf so as to normally hold the cutting plug 3 out of its hole. Thus, the flat flyleaf material normally bridges the bowed portion of 40 the bottom leg I. Now, when the ear 4 is pressed downwardly, assuming the binder is laid out flat on a table, the bottom leg flattens out, the paper is pushed by the ear 4 against-the plug 8, which cuts through and enters the hole 5 in the ear 4. This makes the perforation and it should be particularly noticed that when the pressure on the ear 4' is released, the flyleaf I acts as a stripper for the punching device. The bowed bottom leg 7 when it returns to normal position. pulls the plug out of the hole in the paper and the latter is held by the flat flyleaf i from following down with the plug as the latter retracts. This gives the stripper action.

A characteristic of the perforating clip form '55 shown is that in combination with the flyleaf or its equivalent, it can lie in the loose leaf binder in flat form and yet be exposed all the time for the most convenient use. The spring clip of very thin, flat metal will lie perfectly fiat against the fiyleaf with the very little pressure so the book will close up without difficulty or obstruction.

As I have said, it is customary to have a stiff fly sheet in a loose leaf binder A. My combination with such a sheet of one spring clip 2 for each ring in the book and in line with the rings 2!! as shown in Fig. 1, makes it particularly convenient for the manufacturer to economically supply a perforator with a binder and for the user to punch sheets with perfectly simple convenience. The combined flyleaf and perforator means is shown in position where used in a threering book, for example as in Fig. 1. The binder may be made up in any convenient manner and the flyleaf with sheet perforating means is assembled on the rings.

Having disclosed my invention, I claim:

1. The combination of a stiff sheet for insertion as a loose leaf in a binder, a spring clip with bowed legs fastened to such sheet, one of said legs having a hole and the other leg a plug making up a perforating device adapted to work from the opposite sides of a hole in said sheet, said legs being bowed in the same direction so that after being flattened against opposite sides of said sheet to punch paper the latter will be stripped from the punch by said stiff sheet.

2. A structure for perforating loose leaf paper sheets for binders, comprising a stiff sheet adapted to be carried as a sheet in a binder, a fiat metal spring clip of two legs and with its legs slightly bowed in the same direction, one leg being positioned on each side of the sheet, a cutting hole near the end of one leg and a cooperating cutting plug fastened near the end of the other leg, said clip being fastened to the sheet so as to leave their bowed legs free for spring action in squeezing the sheet between them for cutting holes in paper, said stiff sheet acting as a punch stripper in the operation of the punch.

3. A structure for perforating loose leaf paper sheets for binders, comprising a stiff sheet adapted to be carried as a sheet in a binder, a fiat metal spring clip of two legs and with its legs slightly bowed in the same direction, one leg being positioned on each side of the sheet, a cutting hole near the end of one leg and a cooperating cutting plug fastened near the end of the other leg, said clip being fastened to the sheet so as to leave their bowed legs free for spring action in squeezing the sheet between them for cutting holes in paper, said stiff sheet acting as a punch stripper in the operation of the punch in combination with means on one of said legs to square the edge of a paper sheet for the punching operation.

4. A structure for perforating paper comprising a stiff flat paper support, a flat piece of spring metal at one end fastened to the support and at the other end provided with a finger tab with a hole in the center with downturned flanges at the inner corners of the tab extending through positioning slots in the support, said tab end being normally bent up at enough of an angle to admit a paper sheet being pushed under the tab against said downturned flanges, a cooperating flat piece of spring metal fastened to said support directly under and on the opposite side from the firstmentioned piece, said second piece being bowed downwardly enough from the under surface of the support and provided in the bowed portion with a plug to register with the hole in said finger tab through a hole in said support when the two flat pieces are pressed together.

5. A structure for perforating loose leaf sheets for binders comprising a stiff flat paper support adapted to be inserted in the binder as a sheet, a flat piece of spring metal fastened at one end to the stiff support, the outer portion of such piece being bent up at enough of an angle to admit a loose paper sheet being pushed under said end, a cooperating fiat piece of spring metal fastened to said support directly under and on the opposite side from the first mentioned piece, said second piece being bowed downwardly from the under surface of the support, said spring metal pieces cooperatively carrying a punching plug, a punching hole and ears to position a sheet to be punched whereby pressing the spring pieces fiatwise to squeeze the support between them a sheet positioned against said ears will be properly punched as the cutting plug registers with its 1-.

cutting opening through an opening in the support and the latter will strip the perforated paper as the spring pieces are released. to bow out to normal position.

JOHN SCI-IADE. 

